E6
Gram
Internal Communication Error Between User Interface and Power Module
Induction cooktop shows E6 and all zones are disabled.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Loose harness between UI board and power module, Damaged communication cable, Faulty user interface PCB, Faulty power module PCB
How to Fix / Troubleshooting
Safety first: Disconnect mains power before removing any panels.
- Access electronics: Remove the cooktop from the worktop and take off the bottom cover to expose the user interface (UI) board and power module.
- Check harness connections: Locate the multi-core communication cable between the UI and power module. Reseat both connectors and ensure locking tabs are engaged.
- Inspect cable: Look for pinched, cut, or burnt sections of the cable. Replace the harness if any damage is found.
- Visual PCB inspection: Examine both boards for obvious damage (burn marks, cracked solder joints at the connector). Cold joints can sometimes be re-soldered by a skilled technician.
- Board replacement: If wiring is intact and E6 persists, replace the user interface PCB first. If the fault remains, replace the power module PCB.
Warning: Static discharge can damage electronic boards. Use ESD protection when handling PCBs.
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Repair Difficulty
Hard
4/5
Required Part
User Interface PCB
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